Rule 306.Investments by a Fiduciary
Group XIV: Fiduciary Proceedings · Not amended since adoption on record · Last verified July 14, 2026
Full Text of Rule 306
Plain-English Summary
Rule 306 sets the yardstick for how a court-supervised fiduciary is allowed to invest the money and property in its care. The standard is what a prudent person of discretion and intelligence would do when seeking reasonable income while preserving capital — not the highest possible return, and not a guarantee against loss, but a considered, careful approach. The rule does not override a will, agreement, court order, or other instrument that grants a fiduciary its own investment powers, and it leaves the court free to instruct a fiduciary on interpreting or applying whatever powers that instrument gives. The rule reaches any investment a covered fiduciary makes on or after July 1, 1973.
Rule 306(b) closes off a possible shortcut: in the cases where a fiduciary needs the court's authorization before investing, getting that authorization is not the same as the court blessing the particular investment chosen. The fiduciary still carries full responsibility for the investment decision itself, so prior court approval to invest is not a shield against later scrutiny of how that authority was used.
Rule 306(c) then bars self-dealing outright. A fiduciary cannot buy an estate asset for its own account, or for any account in which it has a personal stake, and it cannot sell an asset to itself as fiduciary when it holds a personal or financial interest in that asset. The rule leaves no room for a fiduciary to sit on both sides of a transaction involving the property it is supposed to be managing for someone else.
Frequently Asked Questions
What investment standard does Rule 306 hold a fiduciary to?
The prudent-person standard: a fiduciary must invest as a prudent person of discretion and intelligence would, seeking reasonable income while preserving capital, unless a governing will, agreement, court order, or other instrument sets different investment powers.
Does getting court authorization to invest protect a fiduciary if the investment turns out badly?
No. Rule 306(b) states that an order authorizing investments does not constitute the court's approval of the particular investments made, and it does not relieve the fiduciary of responsibility for having made them.
Can a fiduciary buy estate property for themselves?
No. Rule 306(c) prohibits a fiduciary from purchasing any asset it holds as fiduciary for its own account or for any account in which it has a personal interest.
Can a fiduciary sell an asset to itself if it has a personal stake in that asset?
No. Rule 306(c) also bars a fiduciary from selling to itself, as fiduciary, any asset in which it has a personal or financial interest, regardless of which side of the transaction the fiduciary is on.
Does Rule 306 apply to every investment a fiduciary has ever made?
It applies to investments made on or after July 1, 1973, by a fiduciary who is subject to the Superior Court's supervision at the time the investment is made.